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45 lines
998 B
45 lines
998 B
4 months ago
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//===-- Use.cpp - Implement the Use class ---------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/Use.h"
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#include "llvm/IR/User.h"
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#include "llvm/IR/Value.h"
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#include <new>
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namespace llvm {
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void Use::swap(Use &RHS) {
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if (Val == RHS.Val)
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return;
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std::swap(Val, RHS.Val);
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std::swap(Next, RHS.Next);
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std::swap(Prev, RHS.Prev);
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*Prev = this;
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if (Next)
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Next->Prev = &Next;
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*RHS.Prev = &RHS;
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if (RHS.Next)
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RHS.Next->Prev = &RHS.Next;
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}
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unsigned Use::getOperandNo() const {
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return this - getUser()->op_begin();
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}
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void Use::zap(Use *Start, const Use *Stop, bool del) {
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while (Start != Stop)
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(--Stop)->~Use();
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if (del)
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::operator delete(Start);
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}
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} // namespace llvm
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